<template>
  <view>
    <view class="goods-list">
      <view v-for="(goods,index) in goodslist" :key="index" @click="gotoDetail(goods)">
        <my-goods :goods="goods"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        //请求参数对象
        queryObj:{
          query:'',
          cid:'',
          pagenum: 1,
          pagesize: 10,
        },
        goodslist:[],
        total:0,
        // 节流阀
        isloading:false
        
      };
    },
    onLoad(options){
      this.getGoodsLsit()
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
    },
    methods:{
      async getGoodsLsit (cb) {
        // 打开节流阀
        this.isloading = true
        const {data:res} = await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
        // 关闭节流阀
        this.isloading = false
        // console.log(res)
        // && 运算符 只要前面为真就执行后面，只要前面为假的，就执行前面
        cb && cb()
        if (res.meta.status !== 200) return uni.$showMsg()
        this.goodslist = [...this.goodslist, ...res.message.goods]
        this.total = res.message.total
      },
      gotoDetail(goods){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + goods.goods_id
        })
      }
    },
    // 触底函数
    onReachBottom(){
    
      if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕.......')
      
      if (this.isloading) return
      // 让页面值自增加1
      this.queryObj.pagenum += 1
      this.getGoodsLsit()
    },
    // 下拉刷新函数
    onPullDownRefresh() {
      // 重置关键数据
      this.queryObj.pagenum = 1,
      this.total = 0,
      this.isloading = false,
      this.goodslist = []
      
      // 重新发起数据请求
      // stopPullDownRefresh() 关闭下拉刷新
      this.getGoodsLsit(() => {uni.stopPullDownRefresh()})
    }
    
  }
</script>

<style lang="scss">

</style>
